Massage head of beauty instrument and beauty instrument

Abstract

The utility model relates to the technical field of beauty equipment, and discloses a beauty instrument massage head and a beauty instrument. The beauty instrument comprises at least one electrode tip used for being in contact with skin to conduct heat or cold; the energy source is used for supplying heat or cold to the plurality of electrode tips; the uniform temperature plate is arranged between the plurality of electrode tips and the energy source so as to uniformly conduct energy to the plurality of electrode tips; and the NTC temperature sensor is used for detecting the temperature of the vapor chamber. According to the massage head of the beauty instrument, the uniform temperature plate is arranged between the plurality of electrode tips and the energy source, energy is uniformly conducted to the plurality of electrode tips through the uniform temperature plate, and only one NTC temperature sensor is arranged to detect the temperature of the uniform temperature plate, so that the cost is greatly saved; and the NTC temperature sensor only needs to detect the temperature of the uniform temperature plate, so that interference caused by different surface temperatures of a plurality of electrode tips is avoided, the temperature detection effect is more accurate, and the use safety and reliability of the beauty instrument are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of beauty equipment, in particular to a beauty instrument massage head and a beauty instrument. Background Art

[0002] Basically, the beauty instruments on the market all have the functions of hot compress and ice compress, and basically achieve the temperature change effect through a semiconductor refrigeration sheet and then conduct heat to the surface of the massage head. Reversing the power supply of the semiconductor refrigeration sheet can realize the switching of the hot compress and ice compress functions.

[0003] During heating, the beauty instrument detects the surface temperature of the massage head through an NTC temperature sensor (NTC, Negative Temperature Coefficient), and controls the heating degree. Generally, a beauty instrument is provided with multiple electrode heads. Usually, multiple NTC temperature sensors need to correspond to the electrode heads, resulting in an increase in cost. Moreover, due to the temperature deviation between the electrode heads, the temperature control of the beauty instrument cannot be carried out according to the detection results of multiple NTC temperature sensors, which affects the precise control of the heating temperature and may even affect the safety of the beauty instrument. Summary of the Utility Model

[0004] In view of this, the utility model provides a beauty instrument massage head and a beauty instrument to solve the problem of increased cost caused by multiple NTC temperature sensors corresponding to measure the heating temperatures of multiple electrode heads.

[0005] In a first aspect, the utility model provides a beauty instrument massage head, comprising:

[0006] Multiple electrode heads for contacting the skin to conduct heat or cold;

[0007] An energy source for supplying heat or cold to the multiple electrode heads;

[0008] A heat pipe, disposed between the multiple electrode heads and the energy source, to evenly conduct energy to the multiple electrode heads;

[0009] An NTC temperature sensor for detecting the temperature of the heat pipe.

[0010] Advantageous Effects: The beauty instrument massage head of the utility model is provided with a heat pipe between the multiple electrode heads and the energy source, and the energy is evenly conducted to the multiple electrode heads through the heat pipe. Only one NTC temperature sensor is set to detect the temperature of the heat pipe, thus saving costs; moreover, only detecting the temperature of the heat pipe by the NTC temperature sensor can avoid the interference caused by different surface temperatures of the multiple electrode heads, and the temperature detection effect is more accurate, improving the safety and reliability of the beauty instrument during use.

[0011] In an alternative embodiment, the energy source includes a thermoelectric cooler; the thermoelectric cooler has a heat exchange surface, the heat pipe is disposed between the heat exchange surface and the plurality of electrode heads, and the thermoelectric cooler is thermally connected to the plurality of electrode heads through the heat pipe.

[0012] Advantageous effects: The thermoelectric cooler is used as a heat exchanger for providing heat or cold. The heat exchange surface of the thermoelectric cooler can be conveniently thermally connected to the plurality of electrode heads through the heat pipe, with good heat exchange effect, and is suitable for beauty instruments.

[0013] In an alternative embodiment, a heat conducting member is disposed between the heat pipe and each of the electrode heads.

[0014] Advantageous effects: The heat conducting member disposed between the heat pipe and the electrode heads can improve the heat exchange effect, avoid the situation of insufficient contact between the heat pipe and the electrode heads, and further ensure the uniformity and consistency of the temperatures of the plurality of electrode heads.

[0015] In an alternative embodiment, the beauty instrument further includes a temperature limiter located in the heating circuit, and the temperature limiter is disposed on the heat pipe.

[0016] Advantageous effects: The safety of the beauty instrument is improved by setting the temperature limiter. When overheating occurs, the temperature limiter can timely cut off the heating circuit to prevent scalding and other situations, and enhance the user experience.

[0017] In an alternative embodiment, the temperature limiter includes a metal spring piece. The heating circuit has a conducting state and a cut-off state. When the metal spring piece is deformed by heat, the heating circuit can be switched from the conducting state to the cut-off state.

[0018] Advantageous effects: The temperature limiter includes a metal spring piece. When the metal spring piece reaches a certain temperature, it is deformed by heat to cut off the heating circuit. Using the deformation of the metal spring piece to control the cut-off of the circuit, the mechanical method has higher reliability.

[0019] In an alternative embodiment, the temperature limiter is spaced apart from the energy source.

[0020] Advantageous effects: Being spaced apart from the energy source can prevent the temperature limiter from being mis-triggered due to the influence of the temperature of the energy source.

[0021] In an alternative embodiment, the beauty instrument massage head further includes a controller, and the controller is respectively connected to the energy source, the NTC temperature sensor, and the temperature limiter.

[0022] Advantageous effects: It is determined whether the beauty instrument is overheated through the temperature detected by the NTC temperature sensor, and then the switch state or power size of the energy source is controlled to improve the safety of the device.

[0023] In an alternative embodiment, the beauty instrument massage head further includes an electrode head cover, and a plurality of the electrode heads are evenly distributed on the electrode head cover.

[0024] Beneficial effects:

[0025] In an alternative embodiment, the beauty instrument massage head further includes a radiator, and the heat exchange surface of the semiconductor cooler on the side away from the electrode head is connected to the radiator.

[0026] Beneficial effects: During the heating process of the beauty instrument massage head, the radiator takes away the cold of the cold surface of the semiconductor refrigeration sheet, thereby ensuring the continuous heating of the massage head.

[0027] In a second aspect, the present utility model provides a beauty instrument, including:

[0028] A fuselage;

[0029] The beauty instrument massage head according to any one of the above, and the beauty instrument massage head is provided on the fuselage.

[0030] Beneficial effects: The beauty instrument of the present utility model includes a beauty instrument massage head, and thus has the same technical effects as the beauty instrument massage head, which will not be elaborated here. Description of the drawings

[0031] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the related art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the related art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic cross-sectional structure diagram of a beauty instrument according to an embodiment of the present utility model;

[0033] Figure 2 For Figure 1 A partially enlarged schematic view of the massage head of the beauty instrument in

[0034] Figure 3 It is a schematic flow chart of the first control method of the beauty instrument according to an embodiment of the present utility model;

[0035] Figure 4 It is a schematic flow chart of the second control method of the beauty instrument according to an embodiment of the present utility model;

[0036] Figure 5 It is a schematic flow chart of the third control method of the beauty instrument according to an embodiment of the present utility model;

[0037] Figure 6 Schematic diagram of the fourth control method of the beauty instrument according to the embodiment of the present utility model;

[0038] Figure 7 Schematic diagram of the fifth control method of the beauty instrument according to the embodiment of the present utility model;

[0039] Figure 8 Schematic diagram of the connection structure of the control device according to the embodiment of the present utility model.

[0040] Description of reference numerals:

[0041] 1. Detection board;

[0042] 2. NTC temperature sensor;

[0043] 3. Electrode head;

[0044] 4. Heat pipe;

[0045] 5. Heat conducting member;

[0046] 6. Electrode head cover;

[0047] 7. Sealing cover;

[0048] 8. Fastening screw;

[0049] 9. Thermostat;

[0050] 10. Semiconductor refrigerator;

[0051] 11. Radiator;

[0052] 12. Outer shell;

[0053] 13. Rear cover;

[0054] 14. Body. Detailed implementation manners

[0055] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0056] In the description of the utility model, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0057] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] The following Figures 1 to 8 is combined to describe the embodiments of the present utility model.

[0059] According to an embodiment of the present utility model, on the one hand, as Figure 1 and Figure 2 shown, a beauty instrument is provided, including:

[0060] At least one electrode head 3 for contacting the skin to conduct heat or cold;

[0061] An energy source for supplying heat or cold to the plurality of electrode heads 3;

[0062] A heat dissipation plate 4 disposed between the plurality of electrode heads 3 and the energy source to uniformly conduct energy to the plurality of electrode heads 3;

[0063] An NTC temperature sensor 2 for detecting the temperature of the heat dissipation plate 4.

[0064] In the beauty instrument of the present utility model, a heat dissipation plate 4 is disposed between the plurality of electrode heads 3 and the energy source, and the energy is uniformly conducted to the plurality of electrode heads 3 through the heat dissipation plate 4. Only one NTC temperature sensor 2 is provided to detect the temperature of the heat dissipation plate 4, which greatly saves costs; moreover, it is only necessary to detect the temperature of the heat dissipation plate 4 by the NTC temperature sensor 2 to avoid interference caused by different surface temperatures of the plurality of electrode heads 3, and the temperature detection effect is more accurate, improving the safety and reliability of the use of the beauty instrument.

[0065] In some embodiments, the energy source includes a thermoelectric cooler 10; the thermoelectric cooler 10 has a heat exchange surface, the heat pipe 4 is disposed between the heat exchange surface and the plurality of electrode heads 3, and the thermoelectric cooler 10 is heat transfer connected to the plurality of electrode heads 3 through the heat pipe 4.

[0066] Using the thermoelectric cooler 10 as a heat exchanger for providing heat or cold, the heat exchange surface of the thermoelectric cooler 10 can be conveniently heat transfer connected to the plurality of electrode heads 3 through the heat pipe 4, with good heat exchange effect, and is suitable for beauty devices.

[0067] Specifically, the heat exchange surface includes a cooling surface and a heating surface, and the conversion between the cooling surface and the heating surface can be conveniently achieved by reversing the polarity of the connected DC power supply. In the heating mode of the beauty device, the side close to the electrode post is the heating surface, and the side opposite to the heating surface is the cooling surface. When entering the cooling mode, the side close to the electrode post is the cooling surface, and the side opposite to the cooling surface is the heating surface. At this time, the heating surface can be connected to a heat sink, which helps to dissipate the heat of the heating surface.

[0068] In some embodiments, a heat conducting member 5 is disposed between the heat pipe 4 and each of the electrode heads 3.

[0069] The heat conducting member 5 disposed between the heat pipe 4 and the electrode head 3 can improve the heat exchange effect, avoid the situation of insufficient contact between the heat pipe 4 and the electrode head 3, and further ensure the uniformity and consistency of the temperatures of the plurality of electrode heads 3. Specifically, a heat conducting member 5 such as heat conducting glue or heat conducting grease can be used to fill the gap between the heat pipe 4 and the electrode head 3 to improve the heat conduction performance.

[0070] In some embodiments, the beauty device further includes a temperature limiter 9 located in the heating circuit, and the temperature limiter 9 is disposed on the heat pipe 4.

[0071] By setting the temperature limiter 9, the safety of the beauty device is improved. When overheating occurs, the temperature limiter 9 can timely cut off the heating circuit to prevent scalding and other situations, and enhance the user experience. The temperature limiter 9 is in contact connection with the heat pipe 4, and the heat of the heat pipe 4 can be directly conducted to the temperature limiter 9, thereby improving the control sensitivity of the temperature limiter 9.

[0072] In some embodiments, the temperature limiter 9 includes a metal spring piece, and the heating circuit has a conducting state and a cut-off state. When the metal spring piece is deformed by heat, the heating circuit can be switched from the conducting state to the cut-off state.

[0073] The temperature limiter 9 includes a metal spring piece. When the metal spring piece reaches a certain temperature, it is deformed by heat to cut off the heating circuit. Using the deformation of the metal spring piece to control the cut-off of the circuit, the mechanical method has higher reliability.

[0074] In some embodiments, the thermostat 9 is spaced apart from the energy source.

[0075] Being spaced apart from the energy source prevents the thermostat 9 from being accidentally triggered due to the influence of the energy source temperature.

[0076] In a second aspect, as Figure 3 shown, the present invention provides a control method for a beauty device, including a temperature control step:

[0077] Obtain the working mode of the beauty device;

[0078] Determine whether it is a heating mode;

[0079] If so, obtain the temperature T of the temperature equalizing plate 4 during heating 1 , and compare it with the first preset value T 01 ;

[0080] Determine whether T 1 ≥T 01 ;

[0081] If it is satisfied, the energy source stops working or works at a reduced power.

[0082] When performing temperature control, the control logic is respectively set according to the working mode of the beauty device, which is more intelligent and accurate, and the control effect is good; the first preset value T 01 corresponds to the temperature value at over-temperature. When the temperature T of the temperature equalizing plate 4 1 satisfies T 1 ≥T 01 , it indicates that the temperature has exceeded the limit. Therefore, the energy source is controlled to stop working or work at a reduced power, and the temperature of the electrode head 3 is adjusted in time to prevent scalding.

[0083] In some embodiments, as Figure 4 shown, the temperature control step includes:

[0084] Obtain the working mode of the beauty device;

[0085] Determine whether it is a heating mode;

[0086] If so, obtain the temperature T of the temperature equalizing plate 4 during heating 1 , and compare it with the first preset value T 01 ;

[0087] Determine whether T 1 ≥T 01 ;

[0088] If it is satisfied, the energy source stops working or works at a reduced power.

[0089] Obtain |T 01 -T 1∣, compare with the preset temperature difference threshold △T;

[0090] Determine whether ∣T 01 -T 1 ∣ ≤ △T is satisfied;

[0091] If satisfied, re - heat.

[0092] The preset temperature difference threshold △T is the temperature difference when determining whether to restart. If ∣T 01 -T 1 ∣ ≤ △T, it indicates that the temperature is no longer over - temperature or the temperature of the heat - equalizing plate 4 is less than the first preset value T 01 , and at this time, the heating operation can be restarted.

[0093] In some embodiments, the beauty instrument further includes a temperature limiter 9, and the operating temperature of the temperature limiter 9 is T 3 , and the difference between the operating temperature of the temperature limiter 9 and the set beauty treatment temperature is △T 1 , and it satisfies the relationship T 3 >T 01 +△T 1 .

[0094] The operating temperature of the temperature limiter 9 and the set beauty treatment temperature satisfy T 3 >T 01 +△T 1 , to prevent the temperature limiter 9 from starting prior to the temperature control step and interfering with the normal temperature control work.

[0095] In some embodiments, the operating temperature T 3 of the temperature limiter 9 = 50 °C.

[0096] The operating temperature of the temperature limiter 9 should not exceed the temperature at which the human body is scalded. Generally, the temperature at which the human body is scalded is 50 °C. Setting the operating temperature of the temperature limiter 9 to 50 °C is safe and reliable.

[0097] In some embodiments, as Figure 5 shown, the control method further includes a temperature compensation step:

[0098] Taking T 01 = T 0 +△t, perform temperature correction on T 01 , where T 0 is the required temperature of the electrode head 3, and △t is the compensation temperature.

[0099] Since there is a certain distance between the detection position of the NTC temperature sensor 2 and the surface of the electrode head 3 in contact with the skin, there is a certain temperature difference between the temperature at the detection position and the actual body sensation temperature. Therefore, control is carried out by means of temperature compensation. After compensating the temperature detected during temperature adjustment, it is actually equivalent to controlling according to the temperature on the surface of the electrode head 3 in contact with the skin, making the temperature control effect better.

[0100] In some embodiments, such as Figure 6 shown, the temperature adjustment control step includes:

[0101] Obtain the working mode of the beauty device;

[0102] If the working mode of the beauty device is the refrigeration mode, obtain the temperature T of the temperature equalizing plate 4 during refrigeration 2 , and compare it with the second preset value T 02 ;

[0103] Judge whether T 2 ≤T 02 ;

[0104] If it is satisfied, the energy source stops working or works at a reduced power.

[0105] The second preset value T 02 corresponds to the temperature value when the refrigeration temperature exceeds the limit. When the temperature T of the temperature equalizing plate 4 2 satisfies T 2 ≤T 02 , it indicates that the temperature has exceeded the limit. Therefore, control the energy source to stop working or work at a reduced power, and adjust the temperature of the electrode head 3 in time to prevent discomfort and poor experience caused by too low temperature.

[0106] In some embodiments, such as Figure 7 shown, the temperature adjustment control step further includes:

[0107] Obtain ∣T 2 -T 02 ∣, and compare it with the preset temperature difference threshold △T;

[0108] Judge whether ∣T 2 -T 02 ∣≤△T;

[0109] If it is satisfied, restart refrigeration.

[0110] The preset temperature difference threshold △T is the temperature difference when judging whether to restart. If ∣T 2 -T 02 ∣≤△T, it indicates that the temperature has not exceeded the limit or the temperature of the temperature equalizing plate 4 is greater than the second preset value T 02 , and at this time, the refrigeration operation can be restarted.

[0111] According to an embodiment of the present invention, on the other hand, as Figure 8 shown, a control device for implementing a beauty instrument control method is further provided, including:

[0112] An acquisition module, configured to acquire the working mode of the beauty instrument and the temperature of the heat dissipation plate 4;

[0113] A judgment module, configured to compare the temperature T of the heat dissipation plate 4 acquired during heating with a first preset value T 1 , and judge whether T 01 ≥T 1 is satisfied; 01 ;

[0114] A control module, configured to control the energy source to stop working or work at a reduced power when T1≥T01 is satisfied.

[0115] By acquiring the working mode of the beauty instrument and the temperature of the heat dissipation plate 4 through the acquisition module, comparing the temperature T1 of the heat dissipation plate 4 acquired during heating with the first preset value T01, and judging whether T1≥T01 is satisfied; if satisfied, controlling the energy source to stop working or work at a reduced power, thereby effectively preventing the occurrence of over-temperature conditions and improving the safety and reliability of the beauty instrument.

[0116] As Figure 2As shown in the figure, the working part housing of the micro-current beauty instrument of the present utility model is composed of an electrode head cover 6, a sealing cover 7, an outer shell 12 and a rear cover 13. Among them, the electrode head 3 is arranged on the electrode head cover 6 and is fixed by insert injection molding or other assembly methods, and is used to contact the skin to conduct the heat of hot compress or cold compress. A detection board 1 is arranged inside the electrode head cover 6, which is in contact with the electrode head 3; a semiconductor refrigerator 10 is also arranged. After the semiconductor refrigerator 10 is energized with direct current, one side generates heat and the other side cools. The generated temperature change is conducted to the electrode head 3 for refrigeration or heating. Since the electrode heads 3 are evenly distributed (or distributed in a certain pattern) on the electrode head cover 6, a heat dissipation plate 4 is arranged between the semiconductor refrigerator 10 and the electrode heads 3. The heat dissipation plate 4 can evenly distribute and conduct the heat to multiple electrode heads 3 to ensure that the surface temperature of each electrode head 3 is consistent and improve the experience. However, the hard contact between the heat dissipation plate 4 and the electrode heads 3, which are metal parts, is likely to cause poor contact and affect the temperature conduction. Therefore, a heat-conducting adhesive with a relatively high thermal conductivity is provided. A radiator 11 is arranged at the rear of the semiconductor refrigerator 10. The radiator 11 is made of an aluminum part or other materials with a relatively large thermal conductivity. When the beauty instrument works for heating, the side of the semiconductor refrigerator 10 in contact with the radiator 11 cools, and the radiator 11 timely absorbs the cold to maintain the continuous heating of the heating surface; on the contrary, when the beauty instrument cools, the semiconductor on the side in contact with the radiator 11 generates heat, and the radiator 11 plays a role in heat dissipation to cool down to ensure that the cooling surface remains at a low temperature continuously. Correspondingly, heat-conducting silicone grease should be coated on the parts where both sides of the semiconductor refrigerator 10 are in contact with the heat dissipation plate 4 and the radiator 11 to ensure effective heat conduction of the contact surface. The rear cover 13 is an appearance decoration part, and its material can be a metal part. Heat-conducting silicone grease is smeared between the radiator 11 and the rear cover 13 for contact to assist the radiator 11 to directly transfer the heat to the outside air, thereby improving the working ability of the semiconductor refrigeration chip, avoiding the limitation of the heat storage capacity of the radiator 11 itself, and effectively reducing the temperature rise inside the radiator 11 during refrigeration, and improving the service life of the product.

[0117] Crucially, an NTC temperature sensor 2 is arranged on the detection board 1, which can detect the temperature on the heat dissipation and conduction plate and is used to control the working temperature of the surface of the massage head. It makes a judgment and control according to the preset temperature and the detected temperature in the program (the main control board is arranged in the fuselage 14 and is not shown in the figure); during refrigeration, when the NTC detected temperature T 2 ≤ the set temperature T 02 , the semiconductor temporarily stops working or works at a reduced power until the detected temperature ∣T 2 -T 02 ∣≤△T and then refrigerates again; during heating, when the NTC detected temperature T 1 ≥ the set temperature T 01 , the semiconductor temporarily stops working or works at a reduced power until the detected temperature ∣T 01 -T 1Reheat when ∣≤△T; △T is the set temperature difference threshold after pausing work. When the difference is greater than this temperature, resume normal refrigeration or heating.

[0118] Correspondingly, since there is a certain distance between the NTC detection position and the surface of the electrode head 3 in contact with the skin, there is a temperature difference between the detection position and the actual body sensation. Therefore, logically, the original temperature detected by the NTC needs to be compensated to correspond to the true temperature of the surface of the electrode head 3. When heating, the temperature of the NTC temperature sensor 2 is measured as T 1 , while the set temperature of the electrode head 3 is T 01 . When the temperature difference is △t, the main control board program uses △t for compensation, that is, the required temperature is T 01 . Then, when the temperature detected by the NTC temperature sensor 2 reaches T 01 +△t, the temperature adjustment control starts. When refrigerating, the risk of frostbite at dozens of degrees below zero will not be reached, so no control is required.

[0119] The placement position of the NTC temperature sensor 2 is at the heat dissipation plate 4, or it can also be at any position on the temperature conduction path between the semiconductor cooler 10 and the electrode head 3. The same applies to the temperature limiter 9. However, the △t for temperature compensation needs to be measured according to the actual situation of different positions.

[0120] It should be noted that if some functions fail during heating, it may cause the temperature to rise abnormally beyond the set safety value, resulting in a scalding accident. Therefore, it is necessary to set a temperature limiter 9 at the heat dissipation and heat conduction plate. When other hardware or programs malfunction, the temperature limiter 9 can reliably cut off the heating operation mechanically to protect the safety of users and products. In particular, the temperature limiter 9 is connected in series with the power supply battery (the battery is set in the fuselage 14 and not shown). When it operates, it directly cuts off the power supply to avoid the temperature limiter 9 automatically recovering after cooling and the product starting without anyone watching, further improving the safety performance. Necessarily, the temperature limit action value T 3 >T 01 +△T 1 , △T 1 is the difference between the operation of the temperature limiter 9 during heating and the set target value. It is necessary to avoid the temperature limiter 9 acting before the program and interfering with the normal temperature control work. At the same time, the set value of T 3 should not exceed the temperature at which the human body is scalded (for example, 50 °C) to avoid the unsafe hidden danger of overheating.

[0121] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A beauty instrument massage head, characterized in that: include: At least one electrode head (3) for contacting the skin to conduct heat or cold; An energy source for supplying heat or cold to the plurality of electrode heads (3); A temperature-averaging plate (4) is disposed between the plurality of electrode heads (3) and the energy source to evenly transmit energy to the plurality of electrode heads (3); The NTC temperature sensor (2) is used to detect the temperature of the temperature equalizing plate (4).

2. The beauty instrument massage head according to claim 1, characterized in that: The energy source comprises a semiconductor refrigerator (10); the semiconductor refrigerator (10) has a heat exchange surface, the temperature averaging plate (4) is arranged between the heat exchange surface and the plurality of electrode heads (3), and the semiconductor refrigerator (10) is heat-conductingly connected to the plurality of electrode heads (3) via the temperature averaging plate (4).

3. The beauty instrument massage head according to claim 2, characterized in that: A heat conducting member (5) is provided between the temperature equalizing plate (4) and each electrode head (3).

4. The beauty instrument massage head according to any one of claims 1 to 3, characterized in that: The beauty instrument massage head also includes a temperature limiter (9) located in the heating circuit, and the temperature limiter (9) is arranged on the temperature averaging plate (4).

5. The beauty instrument massage head according to claim 4, characterized in that: The temperature limiter (9) comprises a metal spring, and the heating circuit has an on state and an off state. When the metal spring is deformed by heat, the heating circuit can be switched from the on state to the off state.

6. The beauty instrument massage head according to claim 5, characterized in that: The temperature limiter (9) is spaced apart from the energy source.

7. The beauty instrument massage head according to claim 4, characterized in that: The beauty instrument massage head also includes a controller, which is respectively connected to the energy source, the NTC temperature sensor (2) and the temperature limiter (9).

8. The beauty instrument massage head according to claim 1, characterized in that: The beauty instrument massage head also includes an electrode head cover (6), and the plurality of electrode heads (3) are evenly distributed on the electrode head cover (6).

9. The beauty instrument massage head according to claim 2, characterized in that: The beauty instrument massage head also includes a radiator (11), and the heat exchange surface of the semiconductor refrigerator (10) on the side away from the electrode head (3) is connected to the radiator (11).

10. A beauty instrument, characterized in that: include: Body (14); The beauty instrument massage head according to any one of claims 1 to 9, wherein the beauty instrument massage head is arranged on the body (14).

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