Electric hair drier control panel overheating protection method

Abstract

The invention relates to the technical field of electric hair driers, and discloses an electric hair drier control panel overheating protection method which comprises the steps of S1, protection temperature threshold setting, S2, temperature value collection, S3, overheating judgment, S4, air inlet protection and S5, air outlet temperature control. According to the overheating protection method for the control panel of the electric hair drier, a protection assembly is arranged at an air inlet cover of the electric hair drier, speed measurement and calculation judgment are conducted on the air inlet amount of an air inlet of the electric hair drier, and therefore hair possibly sucked into the air inlet cover is blown away outwards by controlling movement of the protection assembly; the situation that a user carelessly leads hair to the air inlet cover, normal air inlet of the hair dryer is disturbed, meanwhile, the scalp and the hair of the user are hurt is avoided, the use safety of the hair dryer is improved, the hair dryer can pre-judge the temperature change when the subsequent hair dryer continues to be used, and the use safety of the hair dryer is improved. Therefore, the related structure of the blower is controlled to change in advance.

Description

Technical Field

[0001] The invention relates to the technical field of hair dryers, in particular to an overheating protection method for a hair dryer control panel. Background Art

[0002] A hair dryer is a commonly used household appliance, and it dries the hair of people or pets by blowing heated or cold air. Its structure generally includes circuit boards, heaters, fans and other components, and is easy to use. However, as the hair dryer is used for a longer time, its operating part will become hotter and hotter, which not only affects people's hair-drying experience, but may also cause the hair dryer to overheat and affect its service life.

[0003] According to a new type of hair dryer and temperature control method disclosed (Announcement No.: CN111109811A), in the above application, the coordinated work of the control unit, temperature sensor, and power supply module, combined with the hair dryer temperature control method, achieves precise control of the air outlet temperature, better protects the hair, is beneficial to the health of the scalp, and brings a comfortable user experience to consumers.

[0004] However, in actual use, although the above-mentioned device uses a wave-shaped hair dryer heat control to ensure that the hair dryer itself does not overheat, due to the different hair lengths of people, when blowing the roots of longer hair, it is easy for the hair to block the air inlet of the hair dryer, thereby reducing the air intake of the hair dryer, which may not only pull the user's hair, but also cause poor heat dissipation of the motor, thereby causing the control board to overheat. In view of this, we propose a hair dryer control board overheating protection method. Summary of the invention

[0005] The object of the present invention is to provide a method for overheating protection of a hair dryer control panel to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for overheating protection of a hair dryer control panel, comprising the following steps:

[0007] S1. Setting the protection temperature threshold value. Setting the corresponding protection threshold value according to the model and blowing gear of the hair dryer, that is, the temperature range of the internal control panel when the hair dryer is operating at different blowing gears;

[0008] S2, temperature value collection, collecting temperature data of the air outlet of the hair dryer and the control board through the temperature sensors installed at the air outlet of the hair dryer and the control board;

[0009] S3, overheating judgment, judging whether the temperature of the wind blown out by the hair dryer is in the current gear according to the temperature collected in S2, and judging whether the temperature of the control board in the current gear is too high according to the temperature data of the control board:

[0010] S31, if the temperature of the control panel is not too high during subsequent use, the current state of the blowing function is maintained;

[0011] S32, when the temperature of the control panel is in a rising state during subsequent use, the air intake assembly of the hair dryer is controlled to open the additional air intake port provided on the side of the air intake cover, so as to increase the air intake volume of the hair dryer and perform heat dissipation work on the control panel;

[0012] S4, air intake protection, after judging that the temperature of the control board rises in S3, the air intake volume in the hair dryer is judged by the wind speed measuring device in the hair dryer to judge whether the air intake of the hair dryer is affected:

[0013] S41, if the current air intake volume is equal to the normal air intake volume at the current gear, the current normal operation state of the hair dryer is maintained;

[0014] S42: The current air intake volume is less than the normal air intake volume under the current gear position. Under the premise that the air intake hood is controlled to open the additional air intake port provided on the side, the protective component on the air intake hood is controlled to flip outwards to push away possible obstructions on the air intake hood;

[0015] S43: The current air intake volume is greater than the normal air intake volume under the current gear, and the additional air intake ports opened on the side of the air intake hood are controlled to be closed appropriately to maintain an appropriate air intake volume of the hair dryer;

[0016] S5, air outlet temperature control, through S3 to determine whether the current temperature of the hair dryer outlet exceeds the current gear temperature range:

[0017] S51: The air outlet temperature is within the current temperature range, and the hair dryer is maintained in the current operating state;

[0018] S52: If the air outlet temperature is lower than the current temperature range, the control panel controls the heater of the hair dryer to increase the heat and heat the air blown out;

[0019] S53: If the air outlet temperature is higher than the current gear temperature range, the spare connecting air duct between the air inlet cover and the air outlet of the hair dryer is opened to cool the blown air.

[0020] Preferably, the protection temperature threshold in S1 is set before the hair dryer is used, and the protection temperature threshold includes the temperature threshold of the air outlet of the hair dryer and the temperature threshold of the control board. The air outlet temperature threshold of the hair dryer represents the safety of the air outlet of the hair dryer during operation, and the temperature threshold of the control board indicates whether the control board is overheated or overcooled in the current working state.

[0021] Preferably, the temperature acquisition in S2 is performed simultaneously using multiple temperature sensors, and the average of the collected data is calculated to obtain the average temperature of the position. Specifically, the number of the temperature sensors is set at 3-5, thereby ensuring the accuracy of the temperature acquisition data of the relative position of the equipment.

[0022] Preferably, the number of additional air inlets opened on the air inlet hood of the hair dryer in S32 is set in multiple groups, and the number of additional air inlets in each group is set to several, and the several air inlets are evenly distributed in a circular array on the curved outer surface of the air inlet hood of the hair dryer, and the multiple groups of air inlets are arranged in a linear array on the side of the air inlet of the hair dryer, and a filling closing plate is provided inside the additional air inlet, and the filling closing plate is adapted to the additional air inlet, and a control mechanism is provided inside the air inlet of the hair dryer, and the control mechanism is transmission-connected with the filling closing plate, and the filling closing plate closes the additional air inlet step by step, so that the opening and closing of the additional air inlet can be calculated according to actual needs and changed step by step, so as to avoid excessive changes in air volume at the air inlet of the hair dryer, which in turn affects the normal use of the hair dryer, and at the same time, the complete shielding and closing of the additional air inlet by the filling closing plate can ensure the beauty of the overall appearance of the hair dryer and improve the use effect of the device.

[0023] Preferably, the temperature data judgment in S3 is performed based on the temperature data in multiple adjacent time periods, and the judgment result is the subsequent temperature change trend of the temperature at the measuring position under the current state. The hair dryer collects the temperature data and the processor calculation module confirms the temperature change trend of the temperature data with the temperature value and the usage time as the coordinate values, so that the hair dryer can predict the temperature change during the subsequent use of the hair dryer, thereby controlling the changes in the relevant structures of the hair dryer in advance, such as opening the additional air inlet on the side of the air intake hood in advance, preheating the heater in advance, etc.

[0024] Preferably, the air volume in the hair dryer in S4 is obtained by calculating the air velocity measuring device and the air inlet area in the hair dryer by the processor calculation module, and the calculation formula is:

[0025] L = 3600*F*V;

[0026] Where L is the air volume, the unit is cm 3 / s, F is the ventilation area of ​​the air inlet, which includes the sum of the ventilation area of ​​the air inlet of the hair dryer and the ventilation area of ​​the additional air inlet cm 2 , V is the average wind speed in the hair dryer, and its unit is cm / s.

[0027] Preferably, when setting the temperature thresholds between the various gears in S1, the temperature intervals of adjacent gears have a certain overlap at the beginning and the end, and the overlapping temperature values ​​are set at This makes the temperature measurement and adaptation of the current gear more in line with the actual use of the hair dryer, which can not only ensure that the hair dryer will not overheat, but also ensure that the hair dryer can continue to perform blowing work stably.

[0028] Preferably, when judging whether the air outlet temperature matches the current gear temperature in S5, the judgment criterion is not only to match the current air outlet temperature, but also to capture the predicted temperature of the air outlet under the temperature trend in the future time period calculated by the calculation module in the controller, so that the hair dryer can adjust the corresponding blowing plan in advance according to the current usage conditions, thereby improving the overall adaptability and flexibility of the hair dryer and facilitating people's use.

[0029] Preferably, the number of heaters in S52 is set in multiple groups, and the multiple groups of heaters are installed in a linear array in the heating chamber of the hair dryer, and a spoiler component is provided inside the heating chamber to provide a more uniform heating effect on the air entering the heating chamber, so that the air is heated more evenly, thereby improving the comfort of the hot air blown out by the device, thereby improving the use effect of the device, and at the same time, the multiple groups of heaters are controlled by a controller, and the multiple groups of heaters are connected in series, and each group of heaters is individually provided with a control switch, so that the controller can control a single group of heaters to perform heating work.

[0030] Preferably, a small solenoid valve is provided at the end of the spare connecting pipe connecting the air inlet hood of the hair dryer and the air outlet in the S53, and the solenoid valve is electrically connected to a processor arranged in the hair dryer. When the S53 step is started, the solenoid valves at both ends of the spare connecting pipe are opened at the same time, and the air entering from the air inlet is transported to the air outlet through the fan, and a dispersion structure is provided at one end of the spare connecting pipe at the air outlet to promote the even mixing of the lower temperature air blown out of the spare connecting pipe with the hot air, thereby appropriately reducing the temperature of the wind at the air outlet and improving the comfort of people when using it.

[0031] Compared with the prior art, the present invention provides a method for overheating protection of a hair dryer control panel, which has the following beneficial effects:

[0032] 1. The overheat protection method of the hair dryer control panel is provided with a protective component at the air inlet cover of the hair dryer, and the air intake volume at the air inlet of the hair dryer is measured and calculated and judged, so as to control the movement of the protective component to blow out the hair that may be sucked into the air inlet cover, so as to prevent the user from accidentally introducing the hair into the air inlet cover, thereby interfering with the normal air intake of the hair dryer and causing damage to the user's scalp and hair, thereby improving the safety of the hair dryer.

[0033] 2. The overheating protection method of the hair dryer control panel is that an additional air inlet and a filling and closing plate are provided at the air inlet of the hair dryer, and the filling and closing plate is adjusted and controlled by a control mechanism, so that the opening and closing of the additional air inlet can be calculated according to actual needs and changed step by step, thereby avoiding excessive changes in the air volume at the air inlet of the hair dryer, which in turn affects the normal use of the hair dryer. At the same time, the complete covering and closing of the additional air inlet by the filling and closing plate can ensure the overall aesthetic appearance of the hair dryer and improve the use effect of the device.

[0034] 3. The overheating protection method of the hair dryer control panel collects and calculates the temperature data of the air outlet temperature of the hair dryer at multiple adjacent times, so that the judgment result of the air outlet temperature is the subsequent temperature change trend under the current gear, so that the hair dryer can predict the temperature change when the hair dryer is continued to be used, thereby controlling the changes of the relevant structures of the hair dryer in advance and improving the overall use effect of the hair dryer.

[0035] 4. The overheating protection method of the hair dryer control panel is provided by providing a connecting pipe connecting the air inlet hood and the air outlet in the hair dryer, and providing a dispersion structure at the connecting pipe at the air outlet to promote the uniform mixing of the lower temperature air blown out of the spare connecting pipe with the hot air, thereby appropriately reducing the temperature of the wind at the air outlet and improving the comfort of people when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the operation flow of the present invention;

[0037] Figure 2 This is a schematic diagram of the overheating judgment process of the present invention;

[0038] Figure 3 This is a schematic diagram of the air intake protection process of the present invention;

[0039] Figure 4 This is a schematic diagram of the air outlet temperature control of the present invention. DETAILED DESCRIPTION

[0040] like Figure 1-Figure 4 As shown, the present invention provides a technical solution: a method for overheating protection of a hair dryer control panel, comprising the following steps:

[0041] S1. Setting the protection temperature threshold value. Setting the corresponding protection threshold value according to the model and blowing gear of the hair dryer, that is, the temperature range of the internal control panel when the hair dryer is operating at different blowing gears;

[0042] S2, temperature value collection, collecting temperature data of the air outlet of the hair dryer and the control board through the temperature sensors installed at the air outlet of the hair dryer and the control board;

[0043] S3, overheating judgment, judging whether the temperature of the wind blown out by the hair dryer is in the current gear according to the temperature collected in S2, and judging whether the temperature of the control board in the current gear is too high according to the temperature data of the control board:

[0044] S31, if the temperature of the control panel is not too high during subsequent use, the current state of the blowing function is maintained;

[0045] S32, when the temperature of the control panel is in a rising state during subsequent use, the air intake assembly of the hair dryer is controlled to open the additional air intake port provided on the side of the air intake cover, so as to increase the air intake volume of the hair dryer and perform heat dissipation work on the control panel;

[0046] S4, air intake protection, after judging that the temperature of the control board rises in S3, the air intake volume in the hair dryer is judged by the wind speed measuring device in the hair dryer to judge whether the air intake of the hair dryer is affected:

[0047] S41, if the current air intake volume is equal to the normal air intake volume at the current gear, the current normal operation state of the hair dryer is maintained;

[0048] S42: The current air intake volume is less than the normal air intake volume under the current gear position. Under the premise that the air intake hood is controlled to open the additional air intake port provided on the side, the protective component on the air intake hood is controlled to flip outwards to push away possible obstructions on the air intake hood;

[0049] S43: The current air intake volume is greater than the normal air intake volume under the current gear, and the additional air intake ports opened on the side of the air intake hood are controlled to be closed appropriately to maintain an appropriate air intake volume of the hair dryer;

[0050] S5, air outlet temperature control, through S3 to determine whether the current temperature of the hair dryer outlet exceeds the current gear temperature range:

[0051] S51: The air outlet temperature is within the current temperature range, and the hair dryer is maintained in the current operating state;

[0052] S52: If the air outlet temperature is lower than the current temperature range, the control panel controls the heater of the hair dryer to increase the heat and heat the air blown out;

[0053] S53: If the air outlet temperature is higher than the current gear temperature range, the spare connecting air duct between the air inlet cover and the air outlet of the hair dryer is opened to cool the blown air.

[0054] In one embodiment of the present invention, the protection temperature threshold in S1 is set before the hair dryer is used, and the protection temperature threshold includes the temperature threshold of the air outlet of the hair dryer and the temperature threshold of the control board. The temperature threshold of the air outlet of the hair dryer represents the safety of the hair dryer at the air outlet when it is in operation, and the temperature threshold of the control board indicates whether the control board is overheated or overcooled in the current working state. At the same time, the temperature acquisition in S2 adopts multiple temperature sensors to collect data simultaneously, and the average of the collected data is calculated to obtain the average temperature of the position. Specifically, the number of temperature sensors is set to 3-5, so as to ensure the accuracy of the temperature acquisition data of the relative position of the equipment.

[0055] In addition, the number of additional air inlets opened on the air inlet hood of the hair dryer in S32 is set in multiple groups, and the number of additional air inlets in each group is set to be several, and the multiple air inlets are evenly distributed in a circular array on the curved outer surface of the air inlet hood of the hair dryer, and the multiple groups of air inlets are arranged in a linear array on the side of the air inlet of the hair dryer, and a filling closing plate is provided inside the additional air inlet, and the filling closing plate is adapted to the additional air inlet, and a control mechanism is provided inside the air inlet of the hair dryer, and the control mechanism is transmission-connected to the filling closing plate, and the filling closing plate closes the additional air inlet step by step, so that the opening and closing of the additional air inlet can be calculated according to actual needs, and can be changed step by step, so as to avoid excessive changes in air volume at the air inlet of the hair dryer, which in turn affects the normal use of the hair dryer, and at the same time, the complete shielding and closing of the additional air inlet by the filling closing plate can ensure the overall aesthetics of the hair dryer and improve the use effect of the device.

[0056] In the embodiment of the present invention, the air volume in the hair dryer in S4 is obtained by calculating the air velocity measuring device and the air inlet area in the hair dryer by the processor calculation module, and the calculation formula is:

[0057] L = 3600*F*V;

[0058] Where L is the air volume, the unit is cm 3 / s, F is the ventilation area of ​​the air inlet, which includes the sum of the ventilation area of ​​the hair dryer's air inlet and the ventilation area of ​​the additional air inlet. 2 , V is the average wind speed in the hair dryer, and its unit is cm / s.

[0059] In the present invention, when setting the temperature thresholds between the various gears in S1, the temperature intervals of the adjacent gears have a certain overlap at the beginning and the end, and the overlapping temperature values ​​are set at This makes the temperature measurement and adaptation of the current gear more in line with the actual use of the hair dryer, which can not only ensure that the hair dryer will not overheat, but also ensure that the hair dryer can continue to blow air stably. At the same time, when S5 determines whether the air outlet temperature matches the current gear temperature, its judgment standard is not only to match the current air outlet temperature, but also to capture the predicted temperature of the air outlet temperature trend in the future time period calculated by the calculation module in the controller, so that the hair dryer can adjust the corresponding blowing plan in advance according to the current usage conditions, thereby improving the overall adaptability and flexibility of the hair dryer and facilitating people's use.

[0060] It is worth noting that the number of heaters in S52 is multiple groups, and the multiple groups of heaters are installed in the heating chamber of the hair dryer in a linear array, and a spoiler component is provided inside the heating chamber to provide a more uniform heating effect on the air entering the heating chamber, so that the air is heated more evenly, the comfort of the hot air blown out by the device is improved, and then the use effect of the device is improved. At the same time, the multiple groups of heaters are controlled by a controller, and the multiple groups of heaters are connected in series, and each group of heaters is individually provided with a control switch, so that the controller can control a single group of heaters to perform heating work. Furthermore, in S53, a small solenoid valve is provided at the end of the spare connecting pipe connecting the air inlet hood of the hair dryer and the air outlet, and the solenoid valve is electrically connected to the processor provided in the hair dryer. When the S53 step is started, the solenoid valves at both ends of the spare connecting pipe are opened at the same time, and the air entering the air inlet is transported to the air outlet through the conveyance of the fan, and a dispersion structure is provided at one end of the spare connecting pipe at the air outlet to promote the lower temperature air blown out of the spare connecting pipe to mix evenly with the hot air, thereby appropriately reducing the temperature of the wind at the air outlet and improving the comfort of people when using it.

[0061] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A method for overheating protection of a hair dryer control panel, characterized in that: The following steps are involved: S1. Setting the protection temperature threshold value. Setting the corresponding protection threshold value according to the model and blowing gear of the hair dryer, that is, the temperature range of the internal control panel when the hair dryer is operating at different blowing gears; S2, temperature value collection, collecting temperature data of the air outlet of the hair dryer and the control board through the temperature sensors installed at the air outlet of the hair dryer and the control board; S3, overheating judgment, judging whether the temperature of the wind blown out by the hair dryer is in the current gear according to the temperature collected in S2, and judging whether the temperature of the control board in the current gear is too high according to the temperature data of the control board: S31, if the temperature of the control panel is not too high during subsequent use, the current state of the blowing function is maintained; S32, when the temperature of the control panel is in a rising state during subsequent use, the air intake assembly of the hair dryer is controlled to open the additional air intake port provided on the side of the air intake cover, so as to increase the air intake volume of the hair dryer and perform heat dissipation work on the control panel; S4, air intake protection, after judging that the temperature of the control board rises in S3, the air intake volume in the hair dryer is judged by the wind speed measuring device in the hair dryer to judge whether the air intake of the hair dryer is affected: S41, if the current air intake volume is equal to the normal air intake volume at the current gear, the current normal operation state of the hair dryer is maintained; S42: The current air intake volume is less than the normal air intake volume under the current gear position. Under the premise that the air intake hood is controlled to open the additional air intake port provided on the side, the protective component on the air intake hood is controlled to flip outwards to push away possible obstructions on the air intake hood; S43: The current air intake volume is greater than the normal air intake volume under the current gear, and the additional air intake ports opened on the side of the air intake hood are controlled to be closed appropriately to maintain an appropriate air intake volume of the hair dryer; S5, air outlet temperature control, through S3 to determine whether the current temperature of the hair dryer outlet exceeds the current gear temperature range: S51: The air outlet temperature is within the current temperature range, and the hair dryer is maintained in the current operating state; S52: If the air outlet temperature is lower than the current temperature range, the control panel controls the heater of the hair dryer to increase the heat and heat the air blown out; S53: If the air outlet temperature is higher than the current gear temperature range, the spare connecting air duct between the air inlet cover and the air outlet of the hair dryer is opened to cool the blown air.

2. A hair dryer control panel overheat protection method according to claim 1, characterized in that: The protection temperature threshold in S1 is set before the hair dryer is used, and the protection temperature threshold includes the temperature threshold of the hair dryer outlet and the temperature threshold of the control board. The temperature threshold of the hair dryer outlet represents the safety of the hair dryer at the outlet when the hair dryer is in operation, and the temperature threshold of the control board indicates whether the control board is overheated or overcooled in the current working state.

3. A hair dryer control panel overheat protection method according to claim 1, characterized in that: The temperature acquisition in S2 is performed by using multiple temperature sensors to collect temperature simultaneously, and the average temperature of the position is obtained by averaging the collected data. Specifically, the number of the temperature sensors is set at 3-5, so as to ensure the accuracy of the temperature collection data of the relative position of the equipment.

4. A hair dryer control panel overheat protection method according to claim 1, characterized in that: The number of additional air inlets opened on the air inlet hood of the hair dryer in S32 is set to multiple groups, and the number of additional air inlets in each group is set to a plurality, and the plurality of air inlets are evenly distributed in a circular array on the curved outer surface of the air inlet hood of the hair dryer, and the plurality of groups of air inlets are set in a linear array on the side of the air inlet of the hair dryer, and a filling closing plate is provided inside the additional air inlet, and the filling closing plate is adapted to the additional air inlet, and a control mechanism is provided inside the air inlet of the hair dryer, and the control mechanism is transmission-connected to the filling closing plate, and the filling closing plate closes the additional air inlet step by step.

5. The hair dryer control panel overheat protection method according to claim 1, characterized in that: The temperature data judgment in S3 is performed based on the temperature data in multiple adjacent time periods, and the judgment result is the subsequent temperature change trend of the temperature at the measurement location under the current state. The hair dryer collects the temperature data and the post-processor calculation module confirms the temperature change trend of the temperature data using the temperature value and the usage time as the coordinate values.

6. A hair dryer control panel overheat protection method according to claim 1, characterized in that: The air volume in the hair dryer in S4 is obtained by calculating the wind speed measuring device and the air inlet area in the hair dryer through the processor calculation module, and the calculation formula is: L = 3600*F*V; Where L is the air volume, the unit is cm 3 / s, F is the ventilation area of ​​the air inlet, which includes the sum of the ventilation area of ​​the air inlet of the hair dryer and the ventilation area of ​​the additional air inlet cm 2 , V is the average wind speed in the hair dryer, and its unit is cm / s.

7. A hair dryer control panel overheat protection method according to claim 1, characterized in that: When setting the temperature thresholds between the various gears in S1, there is a certain overlap between the temperature intervals of adjacent gears, and the overlapping temperature values ​​are set at ±2°C.

8. The hair dryer control panel overheat protection method according to claim 5, characterized in that: When determining whether the air outlet temperature matches the current gear temperature in S5, the judgment criteria include not only matching the current air outlet temperature, but also capturing the predicted temperature of the air outlet under the temperature trend in the future time period calculated by the calculation module in the controller.

9. A hair dryer control panel overheat protection method according to claim 1, characterized in that: The number of heaters in S52 is set to be multiple groups, and the multiple groups of heaters are installed in a linear array in the heating chamber of the hair dryer, and a spoiler component is arranged inside the heating chamber. At the same time, the multiple groups of heaters are controlled by a controller, and the multiple groups of heaters are connected in series, and each group of heaters is individually provided with a control switch, so that the controller can control a single group of heaters to perform heating work.

10. The hair dryer control panel overheat protection method according to claim 1, characterized in that: In the S53, a small solenoid valve is provided at the end of the spare connecting pipe connecting the air inlet hood of the hair dryer and the air outlet, and the solenoid valve is electrically connected to the processor arranged in the hair dryer. When the S53 step is started, the solenoid valves at both ends of the spare connecting pipe are opened at the same time, and the air entering from the air inlet is transported to the air outlet through the delivery of the fan, and a dispersion structure is provided at one end of the spare connecting pipe at the air outlet.

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